CN207444940U - A kind of multichannel electrocardio and EEG signals detection device - Google Patents
A kind of multichannel electrocardio and EEG signals detection device Download PDFInfo
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- CN207444940U CN207444940U CN201621436679.XU CN201621436679U CN207444940U CN 207444940 U CN207444940 U CN 207444940U CN 201621436679 U CN201621436679 U CN 201621436679U CN 207444940 U CN207444940 U CN 207444940U
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Abstract
The utility model discloses a kind of multichannel electrocardio and EEG signals detection device.The utility model judges the heart of first passage, EEG signals as the detection of strong High-frequency Interference noise, and the strong High-frequency Interference noise frequency reducing of transient state is converted into marking signal, is sent to DSP module；The hearts of rest channels, EEG signals are successively after emi-filter module, rc filter circuit, filtering, low noise amplification, is connected to analog and digital signal conversion sampling and amplifying circuit obtains the heart, brain electricity digital signal, it is handled again by FPGA module digital filtering, is finally sent to DSP module；By DSP module according to the digital filtered signal of EEG signals and electric knife marking signal filtering process, so as to obtain the low noise heart, EEG signals.The utility model device had both protected the circuit safety of signal acquisition module, realizes the overvoltage protection of circuit and overloads saturation caused by avoiding high-frequency signal, in turn avoids minimum influence of the High-frequency Interference to medical monitoring behavior.
Description
Technical field
The utility model is related to application of the electronic technology in medical instrument, are mainly used for a kind of multichannel brain electric and heart
Function is guarded, specially a kind of to have the anti-multichannel brain electric of strong High-frequency Interference and electrocardiosignal monitor device.
Background technology
With the development of today's society, the demand guarded for brain function and cardiac function also becomes increasingly conspicuous.Wherein for
The demand of neonatal brain function detection becomes increasingly conspicuous.Electroencephalogram to neonatal cerebral functional lateralitv, brain development situation and
The assessment of neonatal brain ischemia anoxic conditions has very high medical value.EEG signals guard the depth of anesthesia mistake in patient
Cheng Zhong has very big value, at present in the surgery anesthesia of patient, mainly takes the artificial anesthesia of special medical staff, by
In human body otherness, for anesthesia depth without analytical judgment quantitative well.And the monitoring based on EEG signals, it can be with
The safety problem during anesthesia of patient is solved well.In clinical operation, the cardiac monitoring of multichannel has become must not
The monitoring tool that can lack.
For the electric and cardiac electrical monitoring of the brain of multichannel, there is the requirement of high-precision and low noise to AD, while also to simulation
The filter circuit of front end has very high requirement, not only to filter noise, also to avoid adding new noise as far as possible, for brain electricity and
There are noise in electrocardiosignal, except realizing noise filtering by the way of analog filtering, it can also pass through the side of digital filtering
Formula carries out noise characteristic identification and filters out, and such as structure is realized based on the digital filter of FPGA module or DSP module.
There are many noises during acquisition electrocardio and EEG signals, wherein, the radiated noise of working environment, power frequency
Interference, mainly by power end and ground terminal be coupled into come interference.It is cured when being used in particular job environment such as operating room
When learning electronic equipment and instrument, some special interference can be generated.The specifically caused interference of electric knife influences very
Weight.The interference characteristic that this kind equipment generates is high frequency and snap voltage is up to several kilovolts, can pass through radio noise mode
Interfere with operating circuit also can by way of Conduction coupling to electrocardio and brain wave acquisition modular belt come instantaneous strong jamming, cause the heart
Electricity and EEG signals saturation distortion, corresponding Acquisition Circuit also can.
For above-mentioned instantaneous high frequency, high pressure interference noise, resist the acquisition of the electrocardio and EEG signals of instantaneous strong High-frequency Interference
Technology is correspondingly improved, it is necessary to make.Should protection signal acquisition module circuit safety, realize to the overvoltage protection of circuit and
It avoids overloading saturation caused by high-frequency signal, avoids minimum influence of the High-frequency Interference to medical monitoring behavior again.To reach this
Purpose, in the front end of heart and brain electricity module, maximum possible curbs this High-frequency Interference noise, while after realizing blackout, the heart
The function of brain electricity monitoring being capable of fast quick-recovery.
The utility model uses a kind of special DSP chip in TI companies DSP2000, DSP5000, DSP6000 series, right
The multichannel heart, EEG signals are handled, and strong high-frequency noise detection module passes through special noise measurement module, the output of this module
Strong High-frequency Interference id signal, heart and brain electric signal is handled accordingly, it is ensured that after strong High-frequency Interference noise disappears, adopt
Collector being capable of normal care situations of quick-recovery soon.
The content of the invention
The purpose of this utility model is the technical deficiency for the electricity monitoring of existing brain, provides a kind of high-precision, low noise
The multichannel heart, brain electricity monitor device, and with instantaneous high frequency, the characteristic of high pressure interference signal is effectively resisted, this heart and brain electricity is guarded
Device is guarded available for neonatal brain function, it is also possible to depth of anesthesia monitoring and clinical cardiac monitoring to patient.Due to
It can be used for hospital ward and operating room etc. local with good anti-electric knife characteristic, the present apparatus.
The utility model multichannel brain electric monitor device mainly includes following components：(1) heart, electrode for encephalograms are commonly used；
(2) high-voltage diode module；(3) electromagnetic interference (EMI) filter module；(4) clamp voltage protection circuit；(5) capacitance-resistance filter
Circuit；(6) analog and digital signal conversion sampling and amplifying circuit (ADC is sampled and amplifying circuit)；(7) strong high-frequency noise detection mould
Block；(8) micro treatment module based on digital signal processing module or ARM framework one or more combinations, wherein based on ARM frameworks
Micro treatment module be referred to as ARM modules, digital signal processing module includes FPGA module, DSP module；
The heart, an output terminal of electrode for encephalograms are connected with the input end signal of high-voltage diode module, the heart, electrode for encephalograms
Another output terminal be connected with the input end signal of electromagnetic interference (EMI) filter module, the heart, electrode for encephalograms another output
End is connected with the input end signal of strong high-frequency noise detection module, an output terminal and pincers of electromagnetic interference (EMI) filter module
The input end signal connection of position voltage protection circuit, another output terminal and capacitance-resistance filter of electromagnetic interference (EMI) filter module
Device circuit input end signal connection, the output terminal of capacitance-resistance filter circuit, one of DSP module (i.e. analog front-end module) it is defeated
Two input end signals that outlet converts sampling and amplifying circuit with analog and digital signal respectively are connected, analog and digital signal conversion
Sampling and amplifying circuit two output terminals respectively with an input terminal of DSP module, an input end signal of FPGA module
Connection, its excess-three input terminal output with the output terminal of FPGA module, strong high-frequency noise detection module respectively of DSP module
End, the output end signal connection of ARM modules, the other two output terminal of DSP module and another input terminal of FPGA module,
The input end signal connection of ARM modules, another input and output termination display of ARM modules are defeated with the input of memory module
Outlet.
The high-voltage diode module is made of neon tube, is connected to EEG signals by an end of each diode, separately
One end is grounded, and mainly for tall and big pulse signal, diode directly turns on ground connection, and tall and big pulse signal is discharged, so as to ensure
The safety of circuit afterwards.
Electromagnetic interference (EMI) filter module disturbs (EMI) filter circuit to form by multi-channel electromagnetic, module it is each defeated
Enter to terminate to each road heart, EEG signals, each output terminal is connected to each input of clamp voltage protection circuit and rc filter circuit
End.Above-mentioned electromagnetic interference (EMI) filter circuit has high frequency common-mode signals good attenuating, mainly for more than 50KHz
Common-mode signal, it is thus apparent to the attenuating of electric knife, can be with the low frequency of reserved high-frequency electric knife and difference mode signal part.
The clamp voltage protection circuit is made of Transient Suppression Diode array circuit, and each input terminal is connected respectively to
Via each road EEG signals of electromagnetic interference (EMI) filter module, each output terminal is grounded respectively.It is defeated mainly to complete general electrostatic
Enter (ESD) defencive function, ensure that the voltage for being input to rc filter circuit will not be excessively high, so as to which circuit and component be protected to pacify
Entirely.
The circuit network that the rc filter circuit is made of resistance and capacitance, mainly by conventional second-order low-pass filter and
Impedance matching circuit is formed, and the EEG signals of each passage have to pass through rc filter circuit, then are connected to analog and digital signal
Conversion sampling and each path input of amplification module.
The strong high-frequency noise detection module converts electricity by a high-pass filtering circuit and the strong High-frequency Interference noise of transient state
Road is formed, and mainly by choosing the heart of first passage, EEG signals are used as contrast signal, by way of high-pass filtering, carry
The high frequency section of signal is taken out, then carries out amplitude limiter circuit, reduces the amplitude of the tall and big pulse signals such as the strong High-frequency Interference noise of transient state,
Then it is specially that D flip-flop and monostable reset multivibrator by Digital Logical Circuits, exports as adjustable fixed frequency
Rate id signal easily facilitates the identification and processing of DSP module.
The analog and digital signal conversion sampling and amplifying circuit are to may be programmed amplification module group by high-precision AD and PGA
Into, be sigma-delta type analog-to-digital converter, specifically can be used TI companies ADS129X series, specifically by ADS1294, ADS1296,
One or more of ADS1298, ADS1299 cascade obtain, and can specifically be determined by the channel number of brain electricity, ADS129X chips
It is interior that there are 24 analog and digital signal conversions of multichannel, there is precision height, the low characteristic of noise.
The FPGA module is mainly used for the digital filtering processing of EEG signals, and input terminal accesses the number of high-precision AD
Output, output terminal are connected to DSP module.It is mainly used for being filtered each road EEG signals, completes the filter of front end capacitance-resistance
Wave circuit carries out digital filtering, has more preferable operability and portability without the filter task completed.
The DSP module is defeated using a kind of applicable model in 2000 series, 5000 series and 6000 series of TI companies
Enter to terminate the EEG signals after FPGA module filtering process and the strong High-frequency Interference of transient state of strong high-frequency noise detection module output
Noise marking signal, signal output terminate to ARM modules.
The ARM modules mainly complete DSP module output result and data display and storage, will also pair with the external world
Interaction and data transmission.
The beneficial effects of the utility model are：
The utility model is believed using high-precision Analog-digital Converter (ADC) technology cooperation digital filtering technique as raising
The technical solution of number link signal-to-noise ratio.Analog and digital signal modular converter is 24 high-precision AD S129X of TI companies
(ADS1292, ADS1293, ADS1294, ADS1298, ADS1299) family chip integrates electromagnetic interference (EMI) filtering and PGA can
Amplification is adjusted, the scale of analog front circuit is greatly reduced, ADS129X family chips can be used cascade mode, can adjust
The number of channels of brain electricity monitoring.Equally the programmable precision instrument amplifier of low noise, high cmrr can also be used to make
For primary amplifier, the heart, the EEG signals by capacitance-resistance filter and electrostatic protection are amplified.Available precision instrument amplification
Device, such as AD620, AD621, INA333, LT1168AIS8.The signal of instrument amplifier output, it is high-precision to be input to rear class
ADC chips, such as ADS131A04, ADS131A02, ADS131E04, ADS131E02, ADS131E08 etc..
Using the strong high-frequency noise detection module of strong high-frequency noise, the antijamming capability of patient monitor is drastically increased.Using
FPGA module completes the digital filtering processing of EEG signals, filtered digital signal is handled using DSP module and right
The strong strong high-frequency noise detection module output signal of high-frequency noise is detected so that each road EEG signals are smoothly input to ARM
Module.The function of control, display and the communication of patient monitor entirety is completed using ARM modules.
Description of the drawings
Fig. 1 is the utility model module diagram；
Fig. 2 is the circuit diagram of the high-voltage diode module of the utility model；
Fig. 3 is the circuit diagram of electromagnetic interference (EMI) filter module of the utility model；
Fig. 4 is the circuit diagram of the clamp voltage protection circuit of the utility model；
Fig. 5 is the circuit diagram of the rc filter circuit of the utility model；
Fig. 6 is the analog and digital signal conversion sampling of the utility model and the circuit diagram of amplifying circuit；
Fig. 7 is the analog and digital signal conversion sampling of the utility model and the optional circuit diagram of amplifying circuit；
Fig. 8 is the circuit diagram of the high-pass filtering module of the strong high-frequency noise detection module of the utility model；
Fig. 9 is the circuit diagram of the igniter module of the strong high-frequency noise detection module of the utility model；
Figure 10 is that the monostable of the strong high-frequency noise detection module of the utility model resets the circuit diagram of multivibrator module.
Specific embodiment
It is for further analysis to the utility model below in conjunction with the accompanying drawings.
As shown in Figure 1, the utility model multichannel brain electric monitor device mainly includes following components：Common brain electricity electricity
Pole, high-voltage diode module, electromagnetic interference (EMI) filter module, clamp voltage protection circuit, rc filter circuit, simulation
Digital signal conversion sampling and amplifying circuit, FPGA module, strong high-frequency noise detection module, ARM modules；
Electrode for encephalograms obtains the original heart, EEG signals, and high-voltage diode module is directed to tall and big pulse signal, and circuit is risen
To protective effect；Detection signal of the heart, EEG signals of first passage as strong high-frequency noise detection module monitoring modular, through strong
The strong High-frequency Interference noise signal frequency reducing of transient state is converted into corresponding marking signal by high-frequency noise detection module, is then transported on
To DSP module；The hearts of other passages, EEG signals are right successively after electromagnetic interference (EMI) filter module, rc filter circuit
The heart, EEG signals are filtered, and after the amplification by low noise, are attached directly to AD samplings and amplifying circuit obtains brain electricity number
Signal, then handled by the digital filtering of the FPGA module progress heart, EEG signals, finally it is sent to DSP module；Pass through DSP moulds
Root tuber is filtered according to the heart, the digital filtered signal of EEG signals and the strong High-frequency Interference noise marking signal of transient state, from
And the low noise heart, EEG signals needed for obtaining；The output result of DSP is sent to ARM modules and carries out whole function control, main
It completes to store and show, and communicated with host computer or PC.
The utility model has the strong High-frequency Interference noise characteristic of anti-transient state, and has good protective effect to circuit, preceding
End passes sequentially through high-voltage diode module, electromagnetic interference (EMI) filter module, clamp voltage protection circuit, high by force to transient state
The tall and big pulse signal such as frequency interfering noise signal plays the role of attenuation and amplitude limit well, more strongly disturbing in the case that existing,
Ensure the safety of circuit, and after the disappearance of the high reject signals such as transient state strong High-frequency Interference noise, the heart, the monitoring work(of EEG signals
Energy being capable of fast quick-recovery.
As shown in Fig. 2, high-voltage diode module includes multiple diodes, the anode of each diode connects each passage heart, brain
Electric signal, minus earth are set.
As shown in figure 3, electromagnetic interference (EMI) filter module includes chip CCDLF8000,1,2,3 pins are respectively used to original
Begin, 6,7,8 pins are for exporting treated the heart, EEG signals.
As shown in figure 4, clamp voltage protection circuit includes chip SP724.
As shown in figure 5, rc filter circuit includes first resistor R1, second resistance R2, the first capacitance C1, the second capacitance
The heart, the EEG signals of termination electromagnetic interference (EMI) filter module output of C2, first resistor R1, first resistor R1's is another
Output signal simulation number after end is connected with one end of one end of the first capacitance C1, one end of the second capacitance C2, second resistance R2
Signal converts N, and the other end of the first capacitance C1, the other end of the second capacitance C2, the other end of second resistance R2 are grounded after connecting
It sets.
As shown in fig. 6, analog and digital signal conversion sampling and amplifying circuit include several ADS129X chips, the 3rd electricity
Hinder R3, the 4th resistance R4, the 5th resistance R5, the 3rd capacitance C3, the 4th capacitance C4.
As shown in fig. 7, analog and digital signal conversion sampling and amplifying circuit include several precision instrument amplifiers (such as
AD620, AD621, INA333, LT1168AIS8 etc.), several high-precision adcs (such as ADS131A04, ADS131A02,
ADS131E04, ADS131E02, ADS131E08 etc.), the 9th resistance R21, the tenth resistance R22, the 11st resistance R23, the 12nd
Resistance R24.
The strong high-frequency noise detection module is made of a high-pass filtering circuit and electric knife identification circuit.
As shown in figure 8, the high-pass filtering circuit includes the 5th capacitance C5, transistor T1, voltage-stabiliser tube D1, the 6th pull-up
Resistance R6, the 7th pull-up resistor R7；5th capacitance C5 one termination first passage EEG signals, the other end of the 5th capacitance C5 with
The anode of voltage-stabiliser tube D1, one end of the 6th pull-up resistor R6 are connected after connecting with the base stage of transistor T1, the transmitting of transistor T1
Pole is grounded, and the collector one of transistor T1 terminates one end of the 7th pull-up resistor R7, the collector other end output of transistor T1
Signal ESU1 connects the input terminal of electric knife identification circuit；6th pull-up resistor R6, another termination of the 7th pull-up resistor R7 are high
Electric frequency voltage DVDD, the minus earth of voltage-stabiliser tube D1；
The electric knife identification circuit resets multivibrator module composition by igniter module and monostable；Such as figure
Shown in 9, the igniter module includes the first D flip-flop, the second D flip-flop, and the C-terminal of the first D flip-flop connects height
The signal ESU1 of bandpass filter circuit output, the D of the first D flip-flop terminate the Q ends of the first D flip-flop, the first D flip-flop
Q terminate the C-terminals of the 2nd D D-flip flops, the Q end-rack of the second D flip-flop is empty, and the D of the second D flip-flop terminates the 2nd D types
The input terminal that signal ESU2, ESU2 order stable state resets multivibrator module is exported behind the Q ends of trigger；
As shown in Figure 10, the monostable, which resets multivibrator module and includes monostable, resets multivibrator, the
Six capacitance C6, the 8th resistance R8, the 9th pull down resistor R9, monostable reset the B termination igniter module outputs of multivibrator
Signal ESU2, A end is grounded after being connected with the one end at VSS ends, the 6th capacitance C6, the other end of CxRx ends and the 6th capacitance C6, the
Eight resistance R8 one end connection, high frequency voltage DVDD after RESET ends are connected with the other end of the 8th resistance R8, the one end at Q ends and
One end connection of 9th pull down resistor R9, the other end output ESU marking signals at Q ends, i.e. electric knife marking signal, Q end-rack
Sky, the other end ground connection of the 9th pull down resistor R9.
The D flip-flop is made of MC14013, can also use other D flip-flops as (CD4013B,
CD4013B-MIL, CD54HC174), other suitable toggle flip-flop, JK flip-flops etc. can also be used to form D flip-flop
Complete circuit function.
The monostable resets the model MC14538 of multivibrator, it is possible to use as CD14538B,
CD4047B-MIL etc..
Above-described embodiment is not the limitation for the utility model, and the utility model is not limited only to above-described embodiment,
As long as meeting the requires of the utility model, the scope of protection of the utility model is belonged to.
Claims (9)
1. a kind of multichannel electrocardio and EEG signals detection device, it is characterised in that including the heart, electrode for encephalograms, high-voltage diode
Module, emi-filter module, clamp voltage protection circuit, rc filter circuit, analog and digital signal conversion are sampled and put
Big circuit, strong high-frequency noise detection module, based on digital signal processing module or based on the micro- of ARM framework one or more combinations
Processing module, wherein digital signal processing module include FPGA module, DSP module；
The heart, an output terminal of electrode for encephalograms are connected with the input end signal of high-voltage diode module, the heart, electrode for encephalograms it is another
The input end signal of one output terminal and emi-filter module connects, the heart, another output terminal and the strong height of electrode for encephalograms
The input end signal connection of frequency noise detection module, an output terminal and the clamp voltage of emi-filter module protect circuit
Input end signal connection, another output terminal of emi-filter module and the input end signal of capacitance-resistance filter circuit connect
It connects, the output terminal of capacitance-resistance filter circuit, DSP module output terminal convert sampling and amplification with analog and digital signal respectively
Circuit two input end signals connection, analog and digital signal conversion sampling and amplifying circuit two output terminals respectively with DSP
The input end signal connection of one input terminal of module, FPGA module, its excess-three input terminal of DSP module respectively with
The output terminal of FPGA module, the output terminal of strong high-frequency noise detection module, the microprocessor based on ARM framework one or more combinations
The output end signal connection of module, the other two output terminal of DSP module and another input terminal of FPGA module are based on
The input end signal connection of the micro treatment module of ARM framework one or more combinations, based on ARM framework one or more groups
Another input and output termination display of the micro treatment module of conjunction and the input/output terminal of memory module；
The high-voltage diode module discharges for tall and big pulse signal；
The emi-filter module is decayed for high frequency common-mode signals；
The strong high-frequency noise detection module extracts the high frequency section of signal by high-pass filtering, then carries out amplitude limiter circuit,
The amplitude of the strong big pulse signal of High-frequency Interference noise of transient state is reduced, is exported as adjustable fixed frequency marking signal；
Digital filtering of the FPGA module for the heart, EEG signals is handled；
The micro treatment module based on ARM framework one or more combinations is aobvious for DSP module output result and data
Show and store, complete and extraneous interaction and data transmission.
2. a kind of multichannel electrocardio as described in claim 1 and EEG signals detection device, it is characterised in that the resistance to height
Pressure diode (led) module is made of neon tube, and the heart, EEG signals, other end ground connection, main pin are connected to by an end of each diode
To tall and big pulse signal, diode directly turns on ground connection, and tall and big pulse signal is discharged, so as to the safety of circuit after ensureing.
3. a kind of multichannel electrocardio as described in claim 1 and EEG signals detection device, it is characterised in that the electromagnetism
Interference filter module is made of multi-channel electromagnetic interference filter circuit, is decayed to high frequency common-mode signals.
4. a kind of multichannel electrocardio as described in claim 1 and EEG signals detection device, it is characterised in that the clamper
Voltage protection circuit is made of Transient Suppression Diode array circuit, is mainly completed general electrostatic input defencive function, is ensured
The voltage for being input to rc filter circuit will not be excessively high, so as to protect circuit and component safety.
5. a kind of multichannel electrocardio as described in claim 1 and EEG signals detection device, it is characterised in that the strong height
Frequency noise detection module is made of a high-pass filtering circuit and the strong High-frequency Interference noise conversion circuit of transient state, mainly passes through choosing
The heart of one of passage, EEG signals is taken by way of high-pass filtering, to extract the radio-frequency head of signal as contrast signal
Point, then amplitude limiter circuit is carried out, the amplitude of the strong big pulse signal of High-frequency Interference noise of transient state is reduced, then passes through Digital Logic electricity
Road is exported as adjustable fixed frequency marking signal.
6. a kind of multichannel electrocardio as described in claim 1 and EEG signals detection device, it is characterised in that the capacitance-resistance
Filter circuit is made of resistance and capacitance, and one end connection input signal of resistance, the other end is output terminal, and an output terminal connects
A/D module is connected to, another output terminal connects two filter capacitors in parallel, another output termination pull down resistor；Filter capacitor
The other end be connected to ground.
7. a kind of multichannel electrocardio as described in claim 1 and EEG signals detection device, it is characterised in that the simulation
Digital signal conversion sampling and amplifying circuit are made of high-precision AD and programmable amplification module, are sigma-delta type analog-to-digital conversion
Device.
8. a kind of multichannel electrocardio as described in claim 1 and EEG signals detection device, it is characterised in that the FPGA
Module is mainly used for the digital filtering processing of the heart, EEG signals, is mainly used for being filtered place to each road heart, EEG signals
Reason completes filter task of the front end rc filter circuit without completion.
9. a kind of multichannel electrocardio as described in claim 1 and EEG signals detection device, it is characterised in that the DSP moulds
Block is serial using DSP2000,5000 or 6000 of TI companies.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621436679.XU CN207444940U (en) | 2016-12-26 | 2016-12-26 | A kind of multichannel electrocardio and EEG signals detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621436679.XU CN207444940U (en) | 2016-12-26 | 2016-12-26 | A kind of multichannel electrocardio and EEG signals detection device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110123315A (en) * | 2019-05-10 | 2019-08-16 | 深圳市德力凯医疗设备股份有限公司 | A kind of the EEG signals detection system and device of anti-electric knife interference |
| CN110399320A (en) * | 2019-07-16 | 2019-11-01 | 武汉鑫诚欣科技有限公司 | A kind of digital signal processing platform meeting mutual high-speed transfer |
| CN112890820A (en) * | 2021-05-06 | 2021-06-04 | 浙江普可医疗科技有限公司 | Interference identification circuit for electroencephalogram physiological signal acquisition and electronic equipment |
| CN113261976A (en) * | 2021-05-07 | 2021-08-17 | 电子科技大学 | Electroencephalogram high-frequency oscillation signal acquisition system |
| CN114391855A (en) * | 2021-12-16 | 2022-04-26 | 光子集成(温州)创新研究院 | Multichannel optic nerve electric signal acquisition device |
-
2016
- 2016-12-26 CN CN201621436679.XU patent/CN207444940U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110123315A (en) * | 2019-05-10 | 2019-08-16 | 深圳市德力凯医疗设备股份有限公司 | A kind of the EEG signals detection system and device of anti-electric knife interference |
| CN110123315B (en) * | 2019-05-10 | 2022-02-22 | 深圳市德力凯医疗设备股份有限公司 | Electroencephalogram signal detection system and device capable of resisting knife interference |
| CN110399320A (en) * | 2019-07-16 | 2019-11-01 | 武汉鑫诚欣科技有限公司 | A kind of digital signal processing platform meeting mutual high-speed transfer |
| CN112890820A (en) * | 2021-05-06 | 2021-06-04 | 浙江普可医疗科技有限公司 | Interference identification circuit for electroencephalogram physiological signal acquisition and electronic equipment |
| CN113261976A (en) * | 2021-05-07 | 2021-08-17 | 电子科技大学 | Electroencephalogram high-frequency oscillation signal acquisition system |
| CN114391855A (en) * | 2021-12-16 | 2022-04-26 | 光子集成(温州)创新研究院 | Multichannel optic nerve electric signal acquisition device |
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